# What is the vertex form of #y= 9x^2 + 2x + 2/7 #?

##### 1 Answer

Feb 26, 2018

See below:

#### Explanation:

The vertex form of a quadratic equation is

To find the vertex form of a quadratic equation, complete the square:

The vertex is

You can also find the vertex with formulas:

so the vertex is at

You can also find vertex form this way:

Plug in

Apologies for the length :)